lxutils/lxcors/cors.go

package lxcors

import (
	"fmt"
	"github.com/gin-gonic/gin"
	"net/http"
	"strings"
)

func Cors() gin.HandlerFunc {
	return func(c *gin.Context) {
		method := c.Request.Method

		//origin := c.Request.Header.Get("Origin")
		//fmt.Println("origin----", origin)
		var headerKeys []string
		for k, _ := range c.Request.Header {
			headerKeys = append(headerKeys, k)
		}
		headerStr := strings.Join(headerKeys, ", ")
		if headerStr != "" {
			headerStr = fmt.Sprintf("access-control-allow-origin, access-control-allow-headers, Content-Type, %s", headerStr)
		} else {
			headerStr = "access-control-allow-origin, access-control-allow-headers"
		}
		headerStr += "access-control-allow-origin, access-control-allow-headers, Content-Type,token"
		//var origins = []string{"https://www.qizhangfang.com", "https://wx.qizhangfang.net", "https://qizhangfang.com", "http://www.qizhangfang.com", "http://qizhangfang.com",
		//	"http://192.168.3.153:8000", "http://localhost:8000"} // 允许跨域
		//fmt.Println(origins)
		//if origin != "" {
		//
		//
		//}

		//下面的都是乱添加的-_-~
		//c.Writer.Header().Set("Access-Control-Allow-Origin", "*")

		//c.Header("Access-Control-Allow-Origin", ogn)
		c.Header("Access-Control-Allow-Origin", "*")
		c.Header("Access-Control-Allow-Headers", headerStr)
		c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
		// c.Header("Access-Control-Allow-Headers", "Authorization, Content-Length, X-CSRF-Token, Accept, Origin, Host, Connection, Accept-Encoding, Accept-Language,DNT, X-CustomHeader, Keep-Alive, User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Type, Pragma")
		c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type, Token, token")
		// c.Header("Access-Control-Max-Age", "172800")
		c.Header("Access-Control-Allow-Credentials", "true")
		c.Set("content-type", "application/json")

		//放行所有OPTIONS方法
		if method == "OPTIONS" {
			c.JSON(http.StatusOK, "Options Request!")
		}

		c.Next()
	}
}